How to calculate system date through function module date

Hi friends!!
i declare a variable "date like sy-datum".
now i want to add 15 days to the system date,
please give me the function module name which can do it.
xample.
date = sytem date. -> date= 13/08/2010
i want date= 28/08/2010.
please help.
Edited by: sandeep08 on Aug 13, 2010 1:53 PM
Moderator message: date calculation questions = FAQ, please search before posting.
locked by: Thomas Zloch on Aug 13, 2010 2:03 PM

Hi,
You can directly add 15 to the date. It will give you appropriate results.
Regards,
Aparna Alashe.

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Hi,
Try these Links, helps u in getting an idea.
http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/30aefb04-7043-2c10-8e92-941536eebc79?QuickLink=index&overridelayout=true
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Hi,
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Or
just have to decide what exceptions u want and under what conditions.
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if
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